Why should I do when it stops after the 1st time reaching temperature? After 48 hours the tank settled to 78 then fish then never came on again?
41956
It only comes on when the temp drops a certain amount. If the temp is staying around 5 degrees above ambient, it will be off.
41957
This heater keeps the temperature in your tank a little above room temperature. If your house temperature fluctuates, then so will your tank temperature. For example, if your house is warm in the summer and cold in the winter, your tank temperature will be higher in the summer and lower in the winter. Also, my heaters red light does not flash on anymore but I know it is still working because I keep a tiny thermometer in my tank to monitor it, so don't worry if you don't see the red light.
646369
I have this heater in a 3 gallon picotope. It is set to 76F. I haven't watched it for fluctuations, but I have had Endler's Live Bearers in the tank for several months. They are thriving, lots of fry. Hope that helps.
2177968
I sent it back, it didn't work well at all! I tried for several days to adjust the high and low temperature settings, but when then heater was on it wouldn't shutoff and it would overshoot and when it was off, it wouldn't turn back on. I had it in a 10 gallon tank. UL....??
35408
Sounds like you used too much safe start, only a 1/2 teaspoon per 2 gallons.. Dont rush it. For me, with a pump running, at least 7 days. Buy only 1 fish to test, watch the fish for a day. Add fish 1 or 2 at a time and see that they are healty..good luck
454331
It heats the water to the desired temp. So it turns on "red light" when the degrees of the water is lower than the desired temp. If you set to 85F it will stay on until the temp of the water is 85F. However, I noticed it heats great but doesn't decide "temps" great. So I bought a Finnex Max-300 Digital Aquarium Heater Controller and the in-line heater will only turn on when my "much improved" controller tells it too. I have my controller set to 82F and my in-line set to 85F. So if the water is 81, my controller turns on power to the in-line, the water starts heating, and once the controller gets to 82F, it shuts off power to the in-line. I did this for "fault protection". I heard this in-line malfunctioned a couple of times, got stuck to 90F and never turned off. Fried all the fish in the water... Go get the Finnex Max-300 Digital Aquarium Heater Controller, you'll thank me later!
1709195
I just got back from a fishing trip where I turned mine on Friday morning, and didn't turn it off until Sunday afternoon. The pump had been on continuously for about 50 hours without any issues and was still going strong. Bait that I had put in on Friday was still alive Sunday.
1409126
I have a 750 watt. I live in mid Michigan. I have it on a timer for 12 hours at night. It keeps a open area usually about 2 feet around the heater (pond is less than 3 feet deep there) most days. When its really cold, the circle shrinks. My fish seem to do fine: I have it near the rock pile they hang out in. You could go a higher wattage or just have it run longer. I got it in 2011 I believe so this will be its 3rd winter. good luck
1237563
The top button is your answer, sounds like it might be faulty. I'm sure you've already tried to just take it out and unplug it and let it sit an hour or so then 1) put it back in the water for 20-30 minutes, 2) plug it in and set the temp. I love mine - and 78 works for my Beta but it will cycle through the choices just fine. I like the way it blinks at a different temp to show actual water temperature.
858712
how long does the temp stay that cold. If you are just trying to keep the tank from freezing up I would say yes. With temps reaching that low from time to time I would put another heater in there around fall time. So one heater does not have to work all the time. I hope this helps
355099
For our tank, the lights were warm enough to keep it in the correct range... get a thermometer and watch it for a few days... you need to allow the tank to cycle for at least a month before you put fish in it... plenty of time to decide...
632213
The temp adjustable and it stop heating at the set temp. The only potential problem I can see is the heater heating your tank to fast due to the size and that can put your fish at risk
1261036
No and No. Depending on the size of the tank will influence the temp. When I had a smaller tank (<1 gal) I had it on a timer. I did 6 hours on, 1 hour off. That kept in the range I needed. The one I have now (about 1.5 gal), it keeps it at about 76-78
366416
Ours stays on a lot but it's not boiling the fish. LOL I really don't know what to tell you except to contact the factory. Good luck!
1373640
I timed it today and it was a little over 6 hours. It could have something to do with humidity or maybe someone else put in a little more water? I don't know. I had never timed it before but I know from the beginning it was more than 4 hours.
844848
No. You will need to keep an eye on the temperature of the water. It is better to buy a preset heater for the tank or use the timer.
1136071
it will break if you turn it on without submersing.. either it's completely broken or the temp in the tank is already warmer than the set temp... you can possibly test by turning the setting up until you see a light or wait a couple hours and check frequently.. or the light is broken. these heaters are pretty good.. accurate within 1° for me!
1986995
Are you sure it wasn't reaching the temp and just shut off until the next temp drop?